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In the CO2 verses temperature graph sometimes the increase in temperature precedes the increase in CO2 and sometimes it is after. This DOES NOT demonstrate cause and effect. As the earth becomes warmer it is more conducive for an environment that will contain more CO2 in the atmosphere. In a cold environment much more CO2 is sequestered in sea water and fauna is greatly lessened. The normal degradation of dead animals and plants is much much less and thus less CO2 is released into the atmosphere.

It is much more likely that the rising CO2 levels are mostly a result of a very moderate rise in global temperature, that is in line with past solar maximums. We are still a couple of degrees cooler than when the Vikings settled Greenland during a past solar max. The colony perished when that solar max went back to normal levels as the present one we are now in will.

If you want to know what causes global warming you can see it every day. It rises in the East and sets in the West. It is a star.It energy output is very stable within a narrow range of variability. These small changes in energy output correlate with our solar max and solar min and temperature changes on the earth and our ice ages.

The enviro-nuts will not address the issue of variations in solar output. They know the truth and ignore it for their own political agenda.

"It is much more likely that the rising CO2 levels are mostly a result of a very moderate rise in global temperature, that is in line with past solar maximums. We are still a couple of degrees cooler than when the Vikings settled Greenland during a past solar max. The colony perished when that solar max went back to normal levels as the present one we are now in will."

Makes sense to me. The data shows the warm decade, 1930's followed by a 24% increase in CO2, which the data sheet calls the beginning of the "industrial buildup". Regardless, however, average temperatures actually cooled for the rest of the 20th century. We've never had a day as hot as the record set in 1930. Other papers show that the Arctic is now about 5 degrees cooler than it was about 2000 years ago.

If you want to know what causes global warming you can see it every day. It rises in the East and sets in the West. It is a star.

I would like to see this point made more often. You've reminded me of an exchange I had with one of our young, liberal engineers.

A conversation led him to ask "Well what do you think causes global warming?" I simply answered "The Sun." After many seconds of stunned silence, he followed up with "No, I mean what is causing the temperature to change?"

That gave me an opening to start talking about Solar variability (I had to explain the difference between insolation and insulation), orbital dynamics, plate tectonics, and the physics of CO2's solubility in water. (I'm not an expert in these areas, but do know hundreds of times more than the average bozo.)

He's actually an intelligent young man, just ignorant and brainwashed, so it took about 1/2 hour before he started to feel overwhelmed, and stopped me.

By the way, here's a good resource that shows 400,000+ year correlation between global average temperatures and atmospheric CO2 levels: http://www.rocketscientistsjournal.com/2006/10/co2_acquittal.html#more.

The interesting thing is that the correlation is strongest for a timelag of about 1,000 years from a temperature change to a change in CO2 levels.